Heater



FIG. 1 is a front perspective view of a heater in the horizontal position, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is an elevational view of the left side thereof;

FIG. 5 is an elevational view of the right side thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is an enlarged sectional view taken along the lines 8--8 of FIG. 2; and

FIG. 9 is a front perspective view of the heater rotated to the vertical position. 

The ornamental design for a heater, as shown and described. 